The SIX is a non-profit Internet Exchange Point in Seattle, Washington. We provide reliable and low-cost interconnection between member networks in the Northwest United States and beyond. Networks connect at speeds from 1 to Nx100 Gbps.

Quick Facts:

  • 268 ASNs, 290 routers, 255 members
  • 19 member-facing 100GbE ports
  • 237 member-facing 10GbE ports
  • 65 member-facing GigE ports
  • 854 Gbps of peak traffic
  • 4+ terabits of connected member capacity
Day Aggregate Traffic

General Announcements

2017-06-05

Jared Reimer's NANOG 70 presentation in honor of the 20th anniversary of the SIX.

2017-05-01

Updated port counts over time can be found here: csv png xls

2017-03-07

The route servers now perform strict filtering using Internet Routing Registry data.

2017-03-04

For the April 3rd, 2017 Annual Member Meeting, please see this agenda and Board Election ballot.

2017-01-11 The route servers now support large BGP communities and prepend communities.
2017-01-01 10GbE one-time port fee reduced from $3,000 to $2,000. 100GbE one-time port fee reduced from $16,000 to $10,000 and optic now included.
2016-11-14

Blackholing support has been implemented on the core switches and route servers.

2016-09-30

Port Fee Changes for 2017

2016-08-26 New switches - Large Netflix donation - Fundraising
2016-05-09

IPv6 and frame size charts have been added to the 5-minute sampling aggregate traffic page. 1-minute sampling is now also available.

2016-01-01

The SIX is @seattleix on Twitter.

2015-06-04

The Euro-IX IXP Member List JSON Schema is now implemented.

2015-01-01

10GbE one-time port fee reduced from $5,000 to $3,000.

2014-09-30

100/40GbE port fees added to join page.

2014-07-23

"Speed" column added to participants page and CSV/TSV files. Thanks goes to PeeringDB.com for this data.

2014-07-22

Route servers are now available. Connect and enjoy!

2011-05-01

"Approx Prefixes" column added to participants page and CSV/TSV files. Thanks goes to PeeringDB.com for this data.

2010-06-21

A multi-year aggregate traffic graph has been added to the bottom of the aggregate traffic page.

2009-07-24

"General Policy" column added to participants page and CSV/TSV files. Thanks goes to PeeringDB.com for this data.

2009-07-17

Added text files containing daily average and maximum traffic levels. Updated daily.

2009-07-13

Added a Topology & Extensions page.

2009-04-03

This web site is now accessible via IPv6.

2008-12-14

The ASN entries on the participants page now link to their respective entry at PeeringDB.com. Please create and/or maintain your entry at PeeringDB.com.

2007-09-02

CSV and TSV file types are now available from the participants page.

2007-06-18

The aggregate traffic page is back up and the SIX is now compliant with the Packet Clearing House documentation BCP for exchange points.

2007-06-03

The participants page is now automatically generated. Columns may be sorted. Please report any problems to webmaster_a_t_seattleix.net.